During an assessment of the cranial nerves, the nurse finds the following: Asymmetry when the client frowns, uneven lifting of the eyebrows, sagging of the lower eyelids, and an escape of air from the right side when the client puffs their cheeks. This would indicate the dysfunction of which of the cranial nerves?
Motor component of IV (Trochlear)
Motor and sensory components of XI (Accessory)
Motor component of VII (Facial)
Motor component of X (Vagus) and sensory component of XII (Hypoglossal)
The Correct Answer is C
A) Motor component of IV (Trochlear): The trochlear nerve primarily controls the superior oblique muscle of the eye, which is responsible for downward and lateral eye movements. The findings described do not relate to eye movement and therefore do not indicate dysfunction of this nerve.
B) Motor and sensory components of XI (Accessory): The accessory nerve innervates the sternocleidomastoid and trapezius muscles, primarily affecting head rotation and shoulder elevation. The symptoms noted in the assessment do not pertain to these muscle functions, so this option is not correct.
C) Motor component of VII (Facial): The signs of asymmetry in frowning, uneven eyebrow lifting, sagging eyelids, and air escaping when puffing the cheeks are characteristic of dysfunction in the facial nerve (cranial nerve VII). This nerve controls the muscles of facial expression, and impairment would lead to the described asymmetrical movements.
D) Motor component of X (Vagus) and sensory component of XII (Hypoglossal): The vagus nerve affects autonomic functions and some swallowing muscles, while the hypoglossal nerve controls tongue movements. Neither nerve is primarily responsible for the facial expressions described in the assessment findings, making this option incorrect.
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Correct Answer is C
Explanation
A) Dizziness: While the term "dizziness" can describe a range of sensations, it is more general and does not specifically capture the experience of the patient feeling that the room is spinning. Dizziness can include feelings of lightheadedness or imbalance, which are not the primary symptoms the patient is describing.
B) Tinnitus: Tinnitus refers to the perception of sound, such as ringing or buzzing, in the absence of an external source. This term does not relate to the patient's symptoms of spinning sensations and nausea, making it irrelevant in this context.
C) Vertigo: This term accurately describes the sensation of spinning or movement, often associated with inner ear disturbances. The patient's description aligns with vertigo, as it reflects the specific experience of feeling as though the environment is moving, which can indeed lead to nausea.
D) Otalgia: Otalgia refers to ear pain and is not applicable to the symptoms the patient describes. Since the patient is focusing on a spinning sensation and associated nausea, this term does not relate to the presenting issue.
Correct Answer is D
Explanation
A) Splint and immobilize the extremity: While immobilizing the injured extremity is important to prevent further injury, it should follow an initial assessment of blood flow and nerve function to ensure there are no vascular or neurological compromises.
B) Apply an ice pack to the ankle: Applying ice can help reduce swelling and alleviate pain. However, it is essential first to assess the circulation to the limb to ensure that applying ice will not worsen any underlying issues.
C) Encourage weight bearing and ambulation: Encouraging weight bearing on a potentially injured ankle can lead to further damage and is not appropriate. The priority is to assess the injury and understand its severity.
D) Assess pulse, color, temperature, and capillary refill: This step is crucial as it evaluates the vascular status of the limb. Assessing these factors helps identify any potential complications, such as compartment syndrome or inadequate blood flow, and guides further management of the injury.